
"Young At Heart" was a huge hit for Sinatra in 1953, the same year it was written. It became the title of a movie Sinatra and Doris Day were filming that year, and it has been played in several other movies and recorded by many vocalists. The song has a 32-bar form used in many popular songs: there's a 16-bar statement, then a repeat of the same chord progression - another 16 bars - but the last several bars contain a different set of chords. Also notice the three-note theme that is repeated dozens of times throughout the tune (it's in the first three notes: "Fairy tales...") This type of repetition of a phrase makes a tune stick in your head! This arrangement, in the key of F, has a two-bar intro with an ascending chord progression.